Improving GLONASS System Efficiency Using Non-Multiple Phase Scale Technology

Introduction . This article analyzes the possibility of implementing highly efficient fault-tolerant algorithms for resolving the ambiguity of phase measurements in Russian and foreign global navigation satellite systems. Nominal values of the GLONASS carrier frequencies with code division of signals are proposed, which ensure an increase in its efficiency by implementing the technology of non-multiple scales. Algorithms for resolving the ambiguity of phase measurements are considered. These algorithms are based on a system of residual classes to calculate the integer value of the number of phase cycles of carrier frequencies in the obtained unambiguity range. The simulation results are presented, and the stability of the proposed algorithms to systematic and random errors of phase measurements is shown. Aim . To improve the efficiency of global navigation satellite systems in determining the position of consumer navigation equipment using phase measurements. Materials and methods . The MATLAB modeling environment was used to process phase measurements from RINEX files. This environment has proven efficient in resolving a wide range of scientific problems of varying complexity in industrial and research settings. To achieve the research aim, the mathematical apparatus of number theory and the system of residual classes were employed. Results . For the GLONASS system with code division of signals, new nominal values of carrier frequencies are proposed; a highly efficient fault-tolerant algorithm for resolving the ambiguity of phase measurements is developed and simulated. The stability of non-multiple scales to systematic errors causing a shift of scales relative to each other is shown, and the operability and reliability of ambiguity resolution algorithms in the presence of random errors not exceeding the value of the specified limiting error of phase measurements is confirmed. Conclusion . The conducted analysis has shown the possibility of forming non-multiple phase metric scales in consumer navigation equipment using signals with code division of GLONASS, GPS, Galileo, and BeiDou systems.